llvm-project

Commit Graph

Author	SHA1	Message	Date
Rafael Espindola	844f6b6cfb	Relax alignment fragments. With this we don't need the EffectiveSize field anymore. Without that field LayoutFragment only updates offsets and we don't need to invalidate the current fragment when it is relaxed (only the ones following it). This is also a very small improvement in the accuracy of the layout info as we now use the after relaxation size immediately. llvm-svn: 121857	2010-12-15 08:45:53 +00:00
Rafael Espindola	8911d03504	Patch by David Meyer to avoid a O(N^2) behaviour when relaxing fragments. Since we now don't update addresses so early, we might relax a bit more than we need to. This is simillar to the issue in PR8467. llvm-svn: 121856	2010-12-15 07:39:29 +00:00
Daniel Dunbar	12f1e32d59	MC/Mach-O: Implement initial support for relaxation. - The implementation is currently very brain dead and inefficient, but I have a clear plan on how to fix it. - The good news is, it works and correctly assembles 403.gcc (when built with Clang, at '-Os', '-Os -g', and '-O3'). Even better, at '-Os' and '-Os -g', the resulting binary is exactly equivalent to that when built with the system assembler. So it probably works! :) llvm-svn: 98396	2010-03-12 22:07:14 +00:00

Author

SHA1

Message

Date

Rafael Espindola

844f6b6cfb

Relax alignment fragments.

With this we don't need the EffectiveSize field anymore. Without that field
LayoutFragment only updates offsets and we don't need to invalidate the
current fragment when it is relaxed (only the ones following it).

This is also a very small improvement in the accuracy of the layout info as
we now use the after relaxation size immediately.

llvm-svn: 121857

2010-12-15 08:45:53 +00:00

Rafael Espindola

8911d03504

Patch by David Meyer to avoid a O(N^2) behaviour when relaxing fragments.

Since we now don't update addresses so early, we might relax a bit more than
we need to. This is simillar to the issue in PR8467.

llvm-svn: 121856

2010-12-15 07:39:29 +00:00

Daniel Dunbar

12f1e32d59

MC/Mach-O: Implement initial support for relaxation.

- The implementation is currently very brain dead and inefficient, but I have a
   clear plan on how to fix it.

 - The good news is, it works and correctly assembles 403.gcc (when built with
   Clang, at '-Os', '-Os -g', and '-O3'). Even better, at '-Os' and '-Os -g',
   the resulting binary is exactly equivalent to that when built with the system
   assembler. So it probably works! :)

llvm-svn: 98396

2010-03-12 22:07:14 +00:00

3 Commits